Clarify v1.2 required for hello-node and remove 1.1 ui section.
Clarify v1.2 required for hello-node and remove 1.1 ui section.

erictune/erictune.github.io,rata/kubernetes.github.io,aidevops/kubernetes.github.io,rata/kubernetes.github.io,ronaldpetty/kubernetes.github.io,aidevops/kubernetes.github.io,rata/kubernetes.github.io,ronaldpetty/kubernetes.github.io,ronaldpetty/kubernetes.github.io,AlainRoy/alainroy.github.io,aidevops/kubernetes.github.io,erictune/erictune.github.io,rata/kubernetes.github.io,erictune/erictune.github.io,aidevops/kubernetes.github.io,erictune/erictune.github.io,AlainRoy/alainroy.github.io,erictune/erictune.github.io,rata/kubernetes.github.io,aidevops/kubernetes.github.io,AlainRoy/alainroy.github.io